CN205677862U - A kind of centrifugal fan for three-phase brushless alternating-current generator - Google Patents
A kind of centrifugal fan for three-phase brushless alternating-current generator Download PDFInfo
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- CN205677862U CN205677862U CN201620606494.2U CN201620606494U CN205677862U CN 205677862 U CN205677862 U CN 205677862U CN 201620606494 U CN201620606494 U CN 201620606494U CN 205677862 U CN205677862 U CN 205677862U
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Abstract
The utility model discloses a kind of centrifugal fan for three-phase brushless alternating-current generator, if using aluminium alloy make and include shroud, hub disk and dry tablet fan leaf.Shroud is the circular ring structure of flat board, and the front end face of this shroud is provided with multiple lightening grooves in uniform way；Hub disk includes the interior circle ring disk parallel with shroud and the cylindrical the ring disk being generally aligned in the same plane with interior circle ring disk, is connected by interior round platform dish and outer round platform dish between interior circle ring disk and cylindrical the ring disk；If dry tablet fan leaf is connected between shroud and hub disk in uniform way, every fan leaf is circular arc and is BI, and the rear end of the inside of every fan leaf is fixed on leading flank and the front surface of cylindrical the ring disk of the outer round platform dish of hub disk；The front end of the outside of every fan leaf is fixed on the rear surface of shroud；Shroud, hub disk and fan leaf are formed in one.Centrifugal fan of the present utility model has high reliability, high efficiency, low noise, the feature such as lightweight, drastically increases generator heat-radiation performance.
Description
Technical field
This utility model relates to a kind of centrifugal fan for three-phase brushless alternating-current generator.
Background technology
The fan being arranged in the rotating shaft of electromotor is for dispelling the heat to the rotor of electromotor and stator, reducing electromotor
Temperature rise, it is ensured that the even running of three-phase brushless alternating-current generator.The centrifugal wind generally used on three-phase brushless alternating-current generator
Fan is that ferrum is made (see Fig. 1), generally has formula shroud, and its weight seems heavier for aluminium alloy, the form of structure
It is flat shroud 1, hub disk 2 and plate fan blade 3.Before flat, welding and the manufacturing process of disk fan are relatively simple, but air-flow
Entering after fan blade is turned has certain separation to lose.
The blade construction of current domestic and international existing three-phase brushless alternating-current generator centrifugal fan has: have radial leaf
Sheet, there are FC and BI.Wherein, the most plate shaped radial blade fan, manufacturing process is the simplest, it is adaptable to bidirectional rotation,
But having greater impact when air-flow enters blade passage, flow losses are relatively big, and efficiency is low, and can produce bigger noise；The most flat
Plate shape hypsokinesis blade fan, inlet air flow loss is less, but in runner, flow losses are relatively big, and efficiency is the highest.Arc hypsokinesis wind
Fan leaf 3 (see Fig. 2), flow losses are little, efficiency is high, and running noise is the lowest, but vane manufacturing complex process, cost is high；The most flat
Plate shape forward blade fan, if external diameter is identical, its blast is the highest, but loss is big, and efficiency is low.
Utility model content
The purpose of this utility model is to overcome the defect of prior art to provide a kind of for three-phase brushless alternative electric generation
The centrifugal fan of machine, it has high reliability, high efficiency, low noise, the feature such as lightweight, drastically increases electromotor and dissipate
Hot property.
The purpose of this utility model is achieved in that a kind of centrifugal fan for three-phase brushless alternating-current generator,
If using aluminium alloy making and including shroud, hub disk and dry tablet fan leaf, wherein,
Described shroud is the circular ring structure of flat board, and the front end face of this shroud is provided with multiple lightening grooves in uniform way；
Described hub disk includes the interior circle ring disk parallel with described shroud and the outer toroid being generally aligned in the same plane with interior circle ring disk
Dish, is connected by interior round platform dish and outer round platform dish between interior circle ring disk and cylindrical the ring disk, and interior round platform dish is connected to interior circle ring disk
Outer end also highlights forward, and outer round platform dish is connected to the outer end of interior round platform dish and highlights backward；The external diameter of described cylindrical the ring disk is less than
The internal diameter of described shroud；
If dry tablet fan leaf is connected between described shroud and hub disk in uniform way, every fan leaf is circular arc and after being
Inclining formula, the rear end of the inside of every fan leaf is fixed on leading flank and the front table of cylindrical the ring disk of the outer round platform dish of described hub disk
Face；The front end of the outside of every fan leaf is fixed on the rear surface of described shroud；
Described shroud, hub disk and fan leaf are formed in one, and the stripping direction of the inside of fan leaf takes off with outside
Mould is in opposite direction.
The above-mentioned centrifugal fan for three-phase brushless alternating-current generator, wherein, outside the outer round platform dish of described hub disk
If the outer surface of surface and interior round platform dish is provided with and some fan leafs reinforcement one to one with being uniformly distributed along the circumference.
The above-mentioned centrifugal fan for three-phase brushless alternating-current generator, wherein, described cylindrical the ring disk sets in uniform way
There are some balance pipes.
The above-mentioned centrifugal fan for three-phase brushless alternating-current generator, wherein, the outer rim of every described fan leaf with
Angle between the surface of described shroud is 75 ° and blade tip changes into the circular arc that radius is 15mm；The outside of every fan leaf to
Interior torsion 15 °.
The above-mentioned centrifugal fan for three-phase brushless alternating-current generator, wherein, the degree of depth of described lightening grooves is shroud
Thickness 1/2nd.
Centrifugal fan for three-phase brushless alternating-current generator of the present utility model, of the present utility model for three-phase without
The centrifugal fan of brush alternating current generator, uses the shroud of slab construction, the hub disk of tortuous panel and BI circular arc shaped fan
Leaf, has efficiency high compared with the three of prior art kinds of fans, the advantages such as noise is low, and flow losses are low, and its heat dispersion is excellent,
Meet the temperature increase requirement of three-phase brushless generator.It addition, the material that centrifugal fan of the present utility model uses is aluminium alloy
And shroud, hub disk and fan leaf are one-body molded, not only significantly reduce the weight of fan, decrease manufacturing cost, also improve
Performance, has beautified outward appearance.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the centrifugal fan that the ferrum of prior art is made；
Fig. 2 is the structural representation of the arc BI fan blade of prior art；
Fig. 3 is the axonometric chart of the centrifugal fan for three-phase brushless alternating-current generator of the present utility model；
Fig. 4 is the front view of the centrifugal fan for three-phase brushless alternating-current generator of the present utility model；
Fig. 5 is the side view of Fig. 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1 to Fig. 3, the centrifugal fan for three-phase brushless alternating-current generator of the present utility model, use aluminum
Alloy makes and includes shroud 1, hub disk 2 and 12 fan leafs 3, wherein:
Shroud 1 is the circular ring structure of flat board, and the front end face of this shroud 1 is provided with multiple lightening grooves 10 in uniform way；Lightening grooves
The degree of depth of 10 is 1/2nd of the thickness of shroud 1；
Hub disk 2 includes the interior circle ring disk 21 parallel with shroud 1, interior round platform dish 22, outer round platform dish 23 and cylindrical the ring disk 24, interior
Circle ring disk 21 and cylindrical the ring disk 24 are positioned at approximately the same plane, by interior round platform dish 22 He between interior circle ring disk 21 and cylindrical the ring disk 24
Outer round platform dish 23 connects, and interior round platform dish 22 is connected to the outer end of interior circle ring disk 21 and highlights forward, in outer round platform dish 23 is connected to
The outer end of round platform dish 22 also highlights backward；
The outer surface of outer round platform dish 23 and the outer surface of interior round platform dish 22 are provided with 12 arc reinforcements 25 in uniform way；In
Eight tapped through holes coupled with wheel hub 210 are offered in uniform way on circle ring disk 21；It is provided with some in cylindrical the ring disk 24 in uniform way
Check the balance pipe 240 that rotor balancing needs；The external diameter of cylindrical the ring disk 24 is less than the internal diameter of shroud 1；
12 corresponding 12 arc reinforcements 25 of fan leaf 3 are connected between shroud 1 and hub disk 2 in uniform way, every
Fan leaf 3 is in circular arc and be BI, and the rear end of the inside of every fan leaf 3 is fixed on the outer round platform dish 23 of hub disk 2
Leading flank and the front surface of cylindrical the ring disk 24；The front end of the outside of every fan leaf 3 is fixed on the rear surface of shroud 1, and often
Angle α between outer rim and the surface of shroud 1 of sheet fan leaf 3 is 75 °, and blade tip changes into the circular arc that radius is R=15mm；Every
Inside windup-degree β=15 °, outside of fan leaf 3；
Shroud 1, hub disk 2 and fan leaf 3 are formed in one, and the stripping direction of the inside of fan leaf 3 takes off with outside
Mould is in opposite direction.
Centrifugal fan for three-phase brushless alternating-current generator of the present utility model has the following characteristics that
1) fan leaf and shroud and hub disk are formed in one structure, form effective aeration structure；
2) external diameter of hub disk is less than the internal diameter of shroud, and uses BI circular arc shaped fan leaf, is not only convenient for forming air intake
Mouthful, and flow losses are low, and hub disk is tortuous panel so that and the air-out of electromotor is more smooth and easy, additionally uses on hub disk
12 arc reinforcements support, and increase the intensity of hub disk；
3) the withdrawing pattern direction of the inside of fan leaf and outside withdrawing pattern are in opposite direction, optimize manufacturability and the gas of mould
Mobility；
4) front surface of shroud is by arranging lightening grooves, has both alleviated the outer ring weight of fan, moreover it is possible to reduce the one-tenth of fan
This.
Centrifugal fan for three-phase brushless alternating-current generator of the present utility model, uses plate shaped shroud, zig zag plane
Hub disk and BI circular arc shaped fan leaf, have efficiency high compared with the three of prior art kinds of fans, noise is low, flow losses
The advantage such as low, its heat dispersion is excellent, meets the temperature increase requirement of three-phase brushless generator.It addition, it is of the present utility model centrifugal
Formula fan use material be aluminium alloy and shroud, hub disk and fan leaf one-body molded, not only significantly reduce the weight of fan
Amount, decreases manufacturing cost, also improves performance, beautified outward appearance.
Above example is the most for illustration of the utility model, rather than to restriction of the present utility model, relevant technical field
Technical staff, in the case of without departing from spirit and scope of the present utility model, it is also possible to make various conversion or modification, because of
The technical scheme of these all equivalents also should belong to category of the present utility model, should be limited by each claim.
Claims (5)
1., for a centrifugal fan for three-phase brushless alternating-current generator, use aluminium alloy make and include shroud, hub disk
If with dry tablet fan leaf, it is characterised in that
Described shroud is the circular ring structure of flat board, and the front end face of this shroud is provided with multiple lightening grooves in uniform way；
Described hub disk includes the interior circle ring disk parallel with described shroud and the cylindrical the ring disk being generally aligned in the same plane with interior circle ring disk, and
And connected by interior round platform dish and outer round platform dish between interior circle ring disk and cylindrical the ring disk；Described interior round platform dish is connected to interior circle ring disk
Outer end and highlight forward, described outer round platform dish is connected to the outer end of interior round platform dish and highlights backward；Outside described cylindrical the ring disk
Footpath is less than the internal diameter of described shroud；
If dry tablet fan leaf is connected between described shroud and hub disk in uniform way, every fan leaf is circular arc and is hypsokinesis
Formula, the rear end of the inside of every fan leaf is fixed on leading flank and the front surface of cylindrical the ring disk of the outer round platform dish of described hub disk；
The front end of the outside of every fan leaf is fixed on the rear surface of described shroud；
Described shroud, hub disk and fan leaf are formed in one, and the stripping direction of the inside of fan leaf and outside demoulding side
To on the contrary.
Centrifugal fan for three-phase brushless alternating-current generator the most according to claim 1, it is characterised in that after described
If the outer surface of the outer surface of the outer round platform dish of dish and interior round platform dish is provided with and some fan leaf one_to_one corresponding with being uniformly distributed along the circumference
Reinforcement.
Centrifugal fan for three-phase brushless alternating-current generator the most according to claim 1 and 2, it is characterised in that institute
State and in cylindrical the ring disk, be provided with some balance pipes in uniform way.
Centrifugal fan for three-phase brushless alternating-current generator the most according to claim 1, it is characterised in that every institute
State the angle between the outer rim of fan leaf and the surface of described shroud and be 75 ° and blade tip changes into the circular arc that radius is 15mm；Often
The outside of sheet fan leaf inwardly reverses 15 °.
Centrifugal fan for three-phase brushless alternating-current generator the most according to claim 1, it is characterised in that described in subtract
The degree of depth of Baking soda is 1/2nd of the thickness of shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606494.2U CN205677862U (en) | 2016-06-20 | 2016-06-20 | A kind of centrifugal fan for three-phase brushless alternating-current generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606494.2U CN205677862U (en) | 2016-06-20 | 2016-06-20 | A kind of centrifugal fan for three-phase brushless alternating-current generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205677862U true CN205677862U (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620606494.2U Active CN205677862U (en) | 2016-06-20 | 2016-06-20 | A kind of centrifugal fan for three-phase brushless alternating-current generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877577A (en) * | 2017-04-18 | 2017-06-20 | 叶露微 | Fully-enclosed motor with shaft extending and connecting impeller |
| CN106877576A (en) * | 2017-04-17 | 2017-06-20 | 叶露微 | Totally-enclosed motor |
| TWI613368B (en) * | 2017-03-07 | 2018-02-01 | Aisa Vital Components China Co Ltd | Fan blade structure |
| GB2610218A (en) * | 2021-08-27 | 2023-03-01 | Cummins Generator Technologies | Fan for a generator |
-
2016
- 2016-06-20 CN CN201620606494.2U patent/CN205677862U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI613368B (en) * | 2017-03-07 | 2018-02-01 | Aisa Vital Components China Co Ltd | Fan blade structure |
| CN106877576A (en) * | 2017-04-17 | 2017-06-20 | 叶露微 | Totally-enclosed motor |
| CN106877577A (en) * | 2017-04-18 | 2017-06-20 | 叶露微 | Fully-enclosed motor with shaft extending and connecting impeller |
| GB2610218A (en) * | 2021-08-27 | 2023-03-01 | Cummins Generator Technologies | Fan for a generator |
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